d = {
	"apple" : "qie",
	"microsoft" : "awesome",
	"google" : "not bad"
}

print("apple: ", d['apple'])
print("microsoft: ", d['microsoft'])

d['baidu'] = "liu mang"

print("baidu: ", d['baidu'])

print('\n判断tencent是否在dict里')
print('tencent' in d)
print(d.get("tencent", -2))